CN208901089U - A kind of natural gas pressure regulating metering device - Google Patents
A kind of natural gas pressure regulating metering device Download PDFInfo
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- CN208901089U CN208901089U CN201821640912.5U CN201821640912U CN208901089U CN 208901089 U CN208901089 U CN 208901089U CN 201821640912 U CN201821640912 U CN 201821640912U CN 208901089 U CN208901089 U CN 208901089U
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- pressure regulation
- pressure
- regulation branch
- nitrogen
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Abstract
The utility model proposes a kind of natural gas pressure regulating metering devices, purpose is to provide a kind of pressure regulating metering device that safety and stability is high, by joined nitrogen air exchange system, it is replaced using the nitrogen of 10Mpa, it replaces to the content of oxygen in all pipelines in natural gas province and is lower than 1%, the degree of purity of natural gas is ensured, reduce oxygen content, improve safety, and turbine flowmeter is provided at inlet manifold and outlet general pipeline, can real-time detection charge flow rate and throughput out, to provide satisfactory natural gas.
Description
Technical field
The utility model relates to natural gas pressure regulating technical field, in particular to a kind of natural gas pressure regulating metering device.
Background technique
With the variation of China's energy resource structure and continuing to increase for environmentally friendly dynamics, obtain the development and utilization of natural gas fast
Violent development, compressed natural gas carry out storage of higher pressures and transport, reach after well head natural gas or pipe natural gas purification compression
Place to use, by multi-stage heat exchanger, decompression directly inputs pipe network supply all types of user.
But the safety of present natural gas pressure regulating metering device is poor, the utility model provides a kind of natural gas pressure regulating
Metering device is provided with air exchange system and active and standby circuit design, substantially increases the safety and stability used, guarantees
Natural gas transportation operation working properly.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is that propose a kind of natural gas pressure regulating metering device, provided with changing
Gas system and active and standby circuit design substantially increase the safety and stability used, guarantee that natural gas transportation is working properly
Operation.
The utility model solves technical solution used by above-mentioned technical problem: a kind of natural gas pressure regulating metering device,
It is characterised by comprising: natural gas pressure regulating system, air exchange system, water circulation system, wherein
The natural gas pressure regulating system includes: inlet manifold, outlet general pipeline, the first pressure regulation branch, the second pressure regulation branch,
Three pressure regulation branches, filtering branch, one end of the inlet manifold connect compressed high-pressure natural gas, and the other end is separately connected institute
State the first pressure regulation branch, the second pressure regulation branch, third pressure regulation branch, filtering branch, the first pressure regulation branch, the second pressure regulation branch
Road, third pressure regulation branch and filtering branch are separately connected the outlet general pipeline；
The air exchange system includes nitrogen air supply pipe, multiple nitrogen air intake branches, nitrogen outlet general pipeline, multiple nitrogen outlets
Branch pipe, the nitrogen air supply pipe connect the multiple nitrogen air intake branch, and the multiple nitrogen air intake branch is separately connected air inlet
General pipeline, the first pressure regulation branch, the second pressure regulation branch, third pressure regulation branch, filtering branch, outlet general pipeline, the first pressure regulation branch
Road, the second pressure regulation branch, third pressure regulation branch, filtering branch, outlet general pipeline are separately connected the nitrogen going out gas branch pipe, the nitrogen
Gas going out gas branch pipe is separately connected nitrogen outlet general pipeline, the nitrogen outlet general pipeline connection diffusion mouth；
The water circulation system includes water inlet manifold, multiple water inlet pipes, outfall sewer, multiple exit branch, it is described into
Supply mains connects the multiple water inlet pipe, and the multiple water inlet pipe is separately connected the first pressure regulation branch, the second pressure regulation
The water inlet of branch and third pressure regulation branch, the water outlet of the first pressure regulation branch, the second pressure regulation branch and third pressure regulation branch
Mouth is separately connected the exit branch, and the exit branch is separately connected the outfall sewer, wherein the first pressure regulation branch
Road, the second pressure regulation branch, third pressure regulation branch structure are identical.
Further, the inlet manifold includes main inlet manifold and auxiliary inlet manifold, the main inlet manifold and described auxiliary
Inlet manifold is arranged in parallel, and the main inlet manifold is equipped with multiple ball valves, filter, pneumatic cut-off valve, turbine flowmeter, pressure
Force snesor, temperature sensor, the filter, pneumatic cut-off valve, turbine flowmeter are set gradually along gas flow direction, institute
The inlet side and outlet side for stating filter are equipped with differential manometer, and the outlet side of the turbine flowmeter is equipped with a ball valve, described
The inlet side of filter is equipped with a ball valve, and the pressure sensor and temperature sensor are sequentially arranged at main inlet manifold's
Inlet end, the pneumatic cut-off valve provide gas source by instrument air, and the auxiliary inlet manifold is equipped with ball valve.
Further, the first pressure regulation branch to third pressure regulation branch includes: pressure indicating controller (PIC), recuperator, mistake
Filter, automatic disconnection valve, electric control valve, pressure transmitter, the air inlet of the first pressure regulation branch to third pressure regulation branch
End is equipped with ball valve, and the recuperator, filter, automatic disconnection valve and electric control valve, pressure transmitter are successively along gas
Flow direction setting, the input terminal of pressure transmitter connection pressure indicating controller (PIC), the pressure indicating controller (PIC) it is defeated
Outlet connects the electric control valve, and the water inlet pipe connects the water inlet end of the recuperator, and the exit branch connects institute
The water outlet of recuperator is stated, the nitrogen air intake branch is connected to the institute of the first pressure regulation branch to Article 3 pressure regulation branch road
It states between recuperator and ball valve, the outlet side of the first pressure regulation branch to third pressure regulation branch is separately connected the nitrogen outlet
Branch pipe.
Further, the filtering branch road is equipped with filter, two shut-off valves, the inlet end and outlet of the filtering branch
A shut-off valve is respectively set in end, and the filter is mounted between two shut-off valves, the filtering air inlet and gas outlet
It is connected with differential manometer.
Further, the bottom of the filter is connected with sewage pipe, and the sewage pipe is connected to blowdown centralized processing area.
Further, the outlet general pipeline includes main outlet general pipeline and auxiliary outlet general pipeline, the main outlet general pipeline and auxiliary outlet
Be all provided on general pipeline there are two ball valve and a turbine flowmeter, the turbine flowmeter is arranged between two ball valves, it is described go out
Gas general pipeline is connected to blender.
Utility model has the advantages that the pressure regulating metering device of 1, the utility model joined nitrogen air exchange system, benefit
It is replaced with the nitrogen of 10Mpa, replaces to the content of oxygen in all pipelines in natural gas province and be lower than 1%, ensured natural gas
Degree of purity, reduce oxygen content, improve safety；
2, the utility model is distinguished in inlet manifold, the first pressure regulation branch, the second pressure regulation branch and third pressure regulation branch
Provided with filter, when to a pipeline-cleaning, impurity is effectively removed；
3, inlet manifold and outlet general pipeline are made of main line and auxiliary piping, substantially increase safety, prevent because
One pipeline blockage goes wrong and whole system is caused all to deactivate, and is also provided with first to third pressure regulation branch, if
Three pressure regulation branches are set, can be opened simultaneously, can be also used alone, when amount of natural gas to be treated is big, so that it may is same
When open, when equivalent is few, it will be able to be used alone, and also function to the effect of a stand-by protection, prevent because of a pressure regulation branch
Path loss is bad and influences work；
4, it is provided with turbine flowmeter at inlet manifold and outlet general pipeline, it being capable of real-time detection charge flow rate and outlet
Flow, to provide satisfactory natural gas.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart of the utility model；
Fig. 2 is the three-dimensional structure diagram of the utility model；
Fig. 3 is the three-dimensional structure diagram of the utility model.
Appended drawing reference: 1, main inlet manifold；2, auxiliary inlet manifold；3, main outlet general pipeline；4, auxiliary outlet general pipeline；5, filtering branch
Road；6, nitrogen air supply pipe；7, nitrogen air intake branch；8, nitrogen outlet general pipeline；9, nitrogen going out gas branch pipe；10, water inlet manifold；11,
Outfall sewer；12, water inlet pipe；13, exit branch；14, pressure sensor；15, temperature sensor；16, filter；17, gas
Dynamic stop valve；18, turbine flowmeter；19, ball valve；20, recuperator；21, self-supporting stop valve；22, electric control valve；23, it presses
Power indicates controller；24, pressure transmitter；25, sewage pipe；26, the first pressure regulation branch；27, the second pressure regulation branch；28, third
Pressure regulation branch.Wherein, N1, Imported gas；N2: gas outlet；N3, diffusion mouth；N4, sewage draining exit；N5, hot water inlet；N6,
Hot water outlet；N7, nitrogen inlet；N8, instrument air.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Figure 1-Figure 3, a kind of natural gas pressure regulating metering device characterized by comprising natural gas pressure regulating system,
Air exchange system, water circulation system, wherein
The natural gas pressure regulating system includes: inlet manifold, outlet general pipeline, the first pressure regulation branch 26, the second pressure regulation branch
27, third pressure regulation branch 28, filtering branch 5, one end of the inlet manifold connect compressed high-pressure natural gas, the other end point
The first pressure regulation branch 26, the second pressure regulation branch 27, third pressure regulation branch 28, filtering branch 5, first pressure regulation are not connected
Branch 26, the second pressure regulation branch 27, third pressure regulation branch 28 and filtering branch 5 are separately connected the outlet general pipeline；
The air exchange system includes nitrogen air supply pipe 6, multiple nitrogen air intake branches 7, nitrogen outlet general pipeline 8, multiple nitrogen
Going out gas branch pipe 9, the nitrogen air supply pipe 6 connect the multiple nitrogen air intake branch 7, and the multiple nitrogen air intake branch 7 is distinguished
Inlet manifold, the first pressure regulation branch 26, the second pressure regulation branch 27, third pressure regulation branch 28, filtering branch 5, outlet general pipeline are connected,
The first pressure regulation branch 26, the second pressure regulation branch 27, third pressure regulation branch 28, filtering branch 5, outlet general pipeline are separately connected institute
Nitrogen going out gas branch pipe 9 is stated, the nitrogen going out gas branch pipe 9 is separately connected nitrogen outlet general pipeline 8, the connection of nitrogen outlet general pipeline 8
Diffusion mouth；
It is as follows that nitrogen replaces oxygen step: (1) nitrogen for being generally available 10Mpa is replaced, displacement to natural gas province institute
Have container, in pipeline oxygen content lower than 1%.Specific steps: it is accessed with nitrogen from conduit air inlet and natural gas province is owned
Connecting pipe is forced into 300-400Kpa；
(2) after injecting nitrogen by air inlet, diffusion mouth is opened, pressure in container conduit is made to be decreased to 50Kpa or less；One
As repeat 3-4 time until all containers, in pipeline oxygen content lower than 1%.
(3) diffusion mouth does not allow nearby personnel close to (because nitrogen is that inert gas has asphyxiation hazard) when discharging.
(4) after equipment or pipeline use, if need to dismantle again because of maintenance, nitrogen displacement should be also carried out, mode is as above
It states or the continuous nitrogen substitute mode of usable low pressure.Nitrogen at this time is replaced will not endanger maintenance repairer as principle.Using upper
When stating the displacement of mode pressurized nitrogen, at least journey also should be replaced with above-mentioned carry out nitrogen twice, before row injects natural gas again after reparation
Sequence.Nitrogen discharge to diffusion mouth discharges after nitrogen displacement.
(5) nitrogen is introduced to system according to nitrogen replacement process and > 0.3MPa was boosted to about 0.02MPa/ minutes speed, so
Slow pressure release is to 0.05MPa afterwards.
(6) every time after nitrogen displacement pressure release in nitrogen blow valve port sampling analysis oxygen content, if qualified, nitrogen displacement knot
Beam.
(7) nitrogen required for combustion gas improvement project nitrogen is replaced about rolls over 70 bottle/time of 40L10MPa nitrogen, replaces by 2 times
Prepare about 140 bottles altogether.
The water circulation system includes water inlet manifold 10, multiple water inlet pipes 12, outfall sewer 11, multiple exit branch
13, the water inlet manifold 10 connects the multiple water inlet pipe 12, and the multiple water inlet pipe 12 is separately connected described first and adjusts
Press the water inlet of branch 26, the second pressure regulation branch 27 and third pressure regulation branch 28, the first pressure regulation branch 26, the second pressure regulation branch
The water outlet of road 27 and third pressure regulation branch 28 is separately connected the exit branch 13, and the exit branch 13 is separately connected described
Outfall sewer 11, wherein the first pressure regulation branch 26, the second pressure regulation branch 27, third pressure regulation 28 structures of branch are identical.
Further, the inlet manifold includes main inlet manifold 1 and auxiliary inlet manifold 2, the main inlet manifold 1 and described
Auxiliary inlet manifold 2 is arranged in parallel, and the main inlet manifold 1 is equipped with multiple ball valves 19, filter 16, pneumatic cut-off valve 17, whirlpool
Flowmeters 18, pressure sensor 14, temperature sensor 15, the filter 16, pneumatic cut-off valve 17,18 edge of turbine flowmeter
Gas flow direction is set gradually, and the inlet side and outlet side of the filter 16 are equipped with differential manometer, the turbine flowmeter 18
Outlet side one ball valve 19 is installed, the inlet side of the filter 16 is equipped with a ball valve 19, the pressure sensor
14 and temperature sensor 15 be sequentially arranged at the inlet end of main inlet manifold 1, the pneumatic cut-off valve 17 is provided by instrument air
Gas source, the auxiliary inlet manifold 2 are equipped with ball valve 19.
Further, the first pressure regulation branch 26 to third pressure regulation branch 28 includes: pressure indicating controller (PIC) 23, re-heat
Device 20, filter 16, automatic disconnection valve, electric control valve 22, pressure transmitter 24, the first pressure regulation branch 26 to third
The inlet end of pressure regulation branch 28 is equipped with ball valve 19, the recuperator 20, filter 16, automatic disconnection valve and electric control valve
22, pressure transmitter 24 is successively arranged along gas flow direction, and the pressure transmitter 24 connects pressure indicating controller (PIC) 23
Input terminal, the output end of the pressure indicating controller (PIC) 23 connect the electric control valve 22, and the water inlet pipe 12 connects institute
The water inlet end of recuperator 20 is stated, the exit branch 13 connects the water outlet of the recuperator 20, and the nitrogen air intake branch 7 divides
It is not connected to the first pressure regulation branch 26 between the recuperator 20 and ball valve 19 of Article 3 pressure regulation branch road, described first adjusts
The outlet side of pressure branch 26 to third pressure regulation branch 28 is separately connected the nitrogen going out gas branch pipe 9.
Further, the filtering branch 5 be equipped with 16, two shut-off valves of filter, it is described filtering branch 5 inlet end and
A shut-off valve is respectively set in outlet side, and the filter 16 is mounted between two shut-off valves, 16 air inlet of filter
Differential manometer is connected with gas outlet.
Further, the bottom of the filter 16 is connected with sewage pipe 25, and the sewage pipe 25 is connected at blowdown concentration
Area is managed, wherein filter 16 uses active carbon filter 16.
Further, the outlet general pipeline includes main outlet general pipeline 3 and auxiliary outlet general pipeline 4, the main outlet general pipeline 3 and it is auxiliary go out
It is all provided on gas general pipeline 4 there are two ball valve 19 and a turbine flowmeter 18, the turbine flowmeter 18 is arranged in two ball valves 19
Between, the outlet general pipeline is connected to blender.
Working method: high-pressure natural gas is accessed through inlet manifold, and pressure regulation branch enters all the way for selection, subsequently into recuperator
It exchanges heat, water circulation system starting is passed through hot water, excludes cold water, will carry out after high-pressure natural gas pressure regulation to low pressure natural gas
Output.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (6)
1. a kind of natural gas pressure regulating metering device characterized by comprising natural gas pressure regulating system, air exchange system, water cyclic system
System, wherein
The natural gas pressure regulating system includes: inlet manifold, outlet general pipeline, the first pressure regulation branch, the second pressure regulation branch, third tune
Press branch, filtering branch, one end of the inlet manifold connects compressed high-pressure natural gas, and the other end is separately connected described the
One pressure regulation branch, the second pressure regulation branch, third pressure regulation branch, filtering branch, the first pressure regulation branch, the second pressure regulation branch,
Third pressure regulation branch and filtering branch are separately connected the outlet general pipeline；
The air exchange system includes nitrogen air supply pipe, multiple nitrogen air intake branches, nitrogen outlet general pipeline, multiple nitrogen outlet branch
Pipe, the nitrogen air supply pipe connect the multiple nitrogen air intake branch, and it is total that the multiple nitrogen air intake branch is separately connected air inlet
Pipe, the first pressure regulation branch, the second pressure regulation branch, third pressure regulation branch, filtering branch, outlet general pipeline, the first pressure regulation branch,
Second pressure regulation branch, third pressure regulation branch, filtering branch, outlet general pipeline are separately connected the nitrogen going out gas branch pipe, the nitrogen
Going out gas branch pipe is separately connected nitrogen outlet general pipeline, the nitrogen outlet general pipeline connection diffusion mouth；
The water circulation system includes water inlet manifold, multiple water inlet pipes, outfall sewer, multiple exit branch, and the water inlet is total
Pipe connects the multiple water inlet pipe, and the multiple water inlet pipe is separately connected the first pressure regulation branch, the second pressure regulation branch
With the water inlet of third pressure regulation branch, the water outlet point of the first pressure regulation branch, the second pressure regulation branch and third pressure regulation branch
The exit branch is not connected, the exit branch is separately connected the outfall sewer, wherein the first pressure regulation branch,
Two pressure regulation branches, third pressure regulation branch structure are identical.
2. a kind of natural gas pressure regulating metering device according to claim 1, which is characterized in that the inlet manifold includes master
Inlet manifold and auxiliary inlet manifold, the main inlet manifold and the auxiliary inlet manifold are arranged in parallel, on the main inlet manifold
Equipped with multiple ball valves, filter, pneumatic cut-off valve, turbine flowmeter, pressure sensor, temperature sensor, the filter, gas
Dynamic stop valve, turbine flowmeter are set gradually along gas flow direction, and the inlet side and outlet side of the filter are equipped with pressure difference
Meter, the outlet side of the turbine flowmeter are equipped with a ball valve, and the inlet side of the filter is equipped with a ball valve, described
Pressure sensor and temperature sensor are sequentially arranged at the inlet end of main inlet manifold, and the pneumatic cut-off valve is mentioned by instrument air
Air supply source, the auxiliary inlet manifold are equipped with ball valve.
3. a kind of natural gas pressure regulating metering device according to claim 2, which is characterized in that the first pressure regulation branch is extremely
Third pressure regulation branch includes: pressure indicating controller (PIC), recuperator, filter, automatic disconnection valve, electric control valve, pressure
Transmitter, the inlet end of the first pressure regulation branch to third pressure regulation branch are equipped with ball valve, the recuperator, filter, from
Power formula stop valve and electric control valve, pressure transmitter are successively arranged along gas flow direction, the pressure transmitter connection pressure
Power indicates that the input terminal of controller, the output end of the pressure indicating controller (PIC) connect the electric control valve, the water inlet branch
Pipe connects the water inlet end of the recuperator, and the exit branch connects the water outlet of the recuperator, the nitrogen air intake branch
The first pressure regulation branch is connected to between the recuperator and ball valve of Article 3 pressure regulation branch road, the first pressure regulation branch
The outlet side of road to third pressure regulation branch is separately connected the nitrogen going out gas branch pipe.
4. a kind of natural gas pressure regulating metering device according to claim 3, which is characterized in that the filtering branch road is equipped with
A shut-off valve, the filter peace is respectively set in filter, two shut-off valves, the inlet end of the filtering branch and outlet side
Between two shut-off valves, the filtering air inlet and gas outlet are connected with differential manometer.
5. according to a kind of any natural gas pressure regulating metering device of claim 2-4, which is characterized in that the filter
Bottom is connected with sewage pipe, and the sewage pipe is connected to blowdown centralized processing area.
6. a kind of natural gas pressure regulating metering device according to claim 1, which is characterized in that the outlet general pipeline includes master
Ball valve and a turbine flow there are two being all provided on outlet general pipeline and auxiliary outlet general pipeline, the main outlet general pipeline and auxiliary outlet general pipeline
Meter, the turbine flowmeter are arranged between two ball valves, and the outlet general pipeline is connected to blender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640912.5U CN208901089U (en) | 2018-10-10 | 2018-10-10 | A kind of natural gas pressure regulating metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640912.5U CN208901089U (en) | 2018-10-10 | 2018-10-10 | A kind of natural gas pressure regulating metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208901089U true CN208901089U (en) | 2019-05-24 |
Family
ID=66575219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821640912.5U Expired - Fee Related CN208901089U (en) | 2018-10-10 | 2018-10-10 | A kind of natural gas pressure regulating metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208901089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941800A (en) * | 2022-04-29 | 2022-08-26 | 北京航天试验技术研究所 | Rocket combustible propellant filling platform and filling method |
-
2018
- 2018-10-10 CN CN201821640912.5U patent/CN208901089U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941800A (en) * | 2022-04-29 | 2022-08-26 | 北京航天试验技术研究所 | Rocket combustible propellant filling platform and filling method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 Termination date: 20201010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |